Our Team Expertly Repairs Yaskawa AC Servo Motor Sigma 5 Series

Precision Zone specializes in Yaskawa product repairs servicing a wide range of AC Servo series such as Yaskawa SGMGV Sigma 5 Series Motors.

The Sigma Five Series from Yaskawa is a step above the sigma two and three but similar in several including the way they interface with SigmaWin+. The SGMGV series is versatile and it’s an excellent option when retrofitting machines. This series is equipped with an absolute encoder standard or maybe equipped with an incremental encoder depending on the demands of the machine. Yaskawa servo motors allow precise movement at high speed with repeatable results. As motion control technology continues to evolve Yaskawa is a leader in motion controls. The SGMGV series of motors is used in a wide range of applications including CNC machines, factory automation and motion controls.

When assessing the functionality of a motor, our engineering team typically conducts a six-step check:

  • Visual Overview Check
  • Static Test
  • Back EMF
  • Feedback Check
  • Alarm Code Troubleshooting
  • Disassembly and Cleaning

This overview is Precision Zone’s basic troubleshooting process. Once our repair team starts on the job we use specialized, customized test fixtures, SKF Baker AVAIV-4, Huntron tracker, signal generator, oscilloscope, milli and mega ohm meters and other necessary tools to assure quality repair. Most importantly, every repair is fully tested in custom-built simulators under load to replicate real-life working environment.

REPAIR EVALUATION PROCESS FOR SGMGV SIGMA 5 SERVO MOTOR

Visual Overview Check

When conducting a visual check, the technician inspects the motor for any mechanical damage to the power connecter, junction box, rotor shaft, oil seals and encoder covers. During the visual inspection the technician notes excessive dirt, oil or grease on cooling fans and all other parts of the motor.

Static Test Basic

Precision Zone repair technicians use an SKF Baker Advanced Winding Analyzer to fully evaluate the stator winding. The SKF Baker performs a wide range of electrical tests, including surge, DC hipot, meg-Ohm and winding resistance tests. In the instance of winding resistance each phase is tested with each other; and the mega ohm readings should be no less than 300 mega ohms.

Winding Resistance Testing

Multimeter Positive Lead U
Multimeter Negative Lead V
Resistance Check Approximately 0.1-0.8 Ohm’s
Multimeter Positive Lead U
Multimeter Negative Lead W
Resistance Check Approximately 0.1-0.8 Ohm’s

Multimeter Positive Lead V
Multimeter Negative Lead W
Resistance Check Approximately 0.1-0.8 Ohm’s

Reading should be balanced across all three phases. These readings will vary depending on the kW size of the motor.

Mega Ohm Testing

Mega Ohm Meter Negative Lead Ground
Mega Ohm Meter Positive Lead U V W
Insulation Check Must be above 300 Mega Ohms

Back EMF Check

If a servo motor passes the static checks it will be back driven and have the back EMF checked. With our in house magnetizing service we can bring back to life servo motors with weak magnets.

Feedback Check

Repair technicians can test encoders in a number of different ways. Our Mitchell Electrics TI-5000EX system can be used to read, write and record encoder count and data information. We have Mitchell Electrics TI-5250 systems that can be used to see live encoder pulses on an oscilloscope. Connecting encoders directly to the manufacture’s drive is another way we can verify if an encoder is working correctly.

Alarm Codes Troubleshooting

Alarms that the Sigma 5 Series Servopack will display when the SGMGV Sigma 5 Series Motors have a problem are the following. These codes displayed are:

Alarm Code Code Type
100 Overcurrent
510, 511, 520 Overspeed
710, 720, 730, 731 Overload
800s and Cs Encoder

Disassembly and Cleaning

All motors are fully dissembled washed and baked. Rotors are checked for bent shafts and bearing journal common problems. The stator winding is rechecked after the baking process. Holding brakes are refurbished and the holding torque is checked. Both the drive end and opposite drive end housing bearing surfaces are checked. Once the evaluation is completed a computer report is generated with all the findings.


Recently Repaired Products

Yaskawa SGMGV-1ED3A6C image SGMGV-1ED3A6C is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad Condition - Requires Reconditioning, Bad DE Bearing, Bad ODE Bearing, Bad Power Connector
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 15kW
Power Supply Voltage: 400VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: With 24VDC holding brake
Control: Standard

Yaskawa SGMGV-09D3A61 image SGMGV-09D3A61 is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad Condition - Requires Reconditioning, Bad DE Bearing, Bad ODE Bearing
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 850W
Power Supply Voltage: 400VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: Without options
Control: Standard

Yaskawa SGMGV-44ADA6C image SGMGV-44ADA6C is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad ODE Bearing, Bad Condition - Requires Reconditioning, Worn Brake Needs Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 4.4kW
Power Supply Voltage: 200VAC
Serial Encoder: 20-bit Incremental
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: With 24VDC holding brake
Control: Standard

Yaskawa SGMGV-09ADA6S image SGMGV-09ADA6S is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad ODE Bearing, Bad Condition - Requires Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 850W
Power Supply Voltage: 200VAC
Serial Encoder: 20-bit Incremental
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: Wtih oil seal
Control: Standard

Yaskawa SGMGV-30A3A61 image SGMGV-30A3A61 is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad Power Connector, Bad Condition - Requires Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 2.9kW
Power Supply Voltage: 200VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: Without options
Control: Standard

Yaskawa SGMGV-09A3E61 image SGMGV-09A3E61 is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad ODE Bearing, Incorrect Feed Back Alignment, Bad Condition - Requires Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 850W
Power Supply Voltage: 200VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: E
Shaft End: Straight with key and tap
Options: Without options
Control: Standard

Yaskawa SGMGV-09D3E61 image SGMGV-09D3E61 is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad ODE Bearing, Bad Condition - Requires Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 850W
Power Supply Voltage: 400VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: E
Shaft End: Straight with key and tap
Options: Without options
Control: Standard

Yaskawa SGMGV-30DDA6S image SGMGV-30DDA6S is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad Oil Seal, Bad DE Bearing, Bad Encoder, Bad Encoder Bearings, Bad ODE Bearing, Bad Condition - Requires Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 2.9kW
Power Supply Voltage: 400VAC
Serial Encoder: 20-bit Incremental
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: Wtih oil seal
Control: Standard

Yaskawa SGMGV-30ADA6S image SGMGV-30ADA6S is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Broken ODE Housing
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 2.9kW
Power Supply Voltage: 200VAC
Serial Encoder: 20-bit Incremental
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: Wtih oil seal
Control: Standard

Yaskawa SGMGV-13D3E6C image SGMGV-13D3E6C is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad ODE Bearing, Bad Power Connector, Bad Condition - Requires Reconditioning, Worn Brake Needs Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 1.3kW
Power Supply Voltage: 400VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: E
Shaft End: Straight with key and tap
Options: With 24VDC holding brake
Control: Standard

Yaskawa SGMGV-13A3E61 image SGMGV-13A3E61 is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Incorrect Feed Back Alignment
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 1.3kW
Power Supply Voltage: 200VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: E
Shaft End: Straight with key and tap
Options: Without options
Control: Standard

Yaskawa SGMGV-13ADA6C image SGMGV-13ADA6C is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad ODE Bearing, Bad Condition - Requires Reconditioning, Worn Brake Needs Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 1.3kW
Power Supply Voltage: 200VAC
Serial Encoder: 20-bit Incremental
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: With 24VDC holding brake
Control: Standard

Yaskawa SGMGV-44DDA6F image SGMGV-44DDA6F is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad Encoder Bearings, Incorrect Feed Back Alignment, Bad Condition - Requires Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 4.4kW
Power Supply Voltage: 400VAC
Serial Encoder: 20-bit Incremental
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: With dust seal
Control: Standard

Yaskawa SGMGV-13ADA61 image SGMGV-13ADA61 is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad Encoder, Bad Encoder Bearings, Bad ODE Bearing, Bad Oil Seal, Full of Oil Inside, Bad Condition - Requires Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 1.3kW
Power Supply Voltage: 200VAC
Serial Encoder: 20-bit Incremental
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: Without options
Control: Standard

Yaskawa SGMGV-1AD3A6C image SGMGV-1AD3A6C is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad Brake, Bad DE Bearing, Bad ODE Bearing, Bad Condition - Requires Reconditioning, Worn DE Housing
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 11kW
Power Supply Voltage: 400VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: With 24VDC holding brake
Control: Standard

Yaskawa SGMGV-09D3E6S image SGMGV-09D3E6S is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad ODE Bearing, Bad Condition - Requires Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 850W
Power Supply Voltage: 400VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: E
Shaft End: Straight with key and tap
Options: Wtih oil seal
Control: Standard

Yaskawa SGMGV-75D3A61 image SGMGV-75D3A61 is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad Encoder, Bad ODE Bearing, Bad Condition - Requires Reconditioning, Worn DE Housing, Worn ODE Housing
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 7.5kW
Power Supply Voltage: 400VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: Without options
Control: Standard

Yaskawa SGMGV-55D3A61 image SGMGV-55D3A61 is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Worn DE Housing, Bad DE Bearing, Bad ODE Bearing, Bad Power Connector, Bad Condition - Requires Reconditioning, Worn ODE Housing
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 5.5kW
Power Supply Voltage: 400VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: Without options
Control: Standard

Yaskawa SGMGV-09A3A6C image SGMGV-09A3A6C is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad ODE Bearing, Bad Oil Seal, Bad Condition - Requires Reconditioning, Worn Brake Needs Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 850W
Power Supply Voltage: 200VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: With 24VDC holding brake
Control: Standard

Yaskawa SGMGV-55A3A2E image SGMGV-55A3A2E is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad Brake Connector, Bad DE Bearing, Bad ODE Bearing, Bad Power Connector, Bad Condition - Requires Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 5.5kW
Power Supply Voltage: 200VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: Standard
Shaft End: Straight without key
Options: With oil seal and 24VDC holding brake
Control: Standard

Yaskawa SGMGV-44A3A61 image SGMGV-44A3A61 is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad Feed Back Connector, Bad ODE Bearing, Bad Condition - Requires Reconditioning, Worn Shaft Keyway
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 4.4kW
Power Supply Voltage: 200VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: Without options
Control: Standard

Yaskawa SGMGV-44D3A6C image SGMGV-44D3A6C is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad Brake, Bad DE Bearing, Bad ODE Bearing, Bad Condition - Requires Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 4.4kW
Power Supply Voltage: 400VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: With 24VDC holding brake
Control: Standard

Yaskawa SGMGV-44ADA6E image SGMGV-44ADA6E is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad ODE Bearing, Bad Condition - Requires Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 4.4kW
Power Supply Voltage: 200VAC
Serial Encoder: 20-bit Incremental
Design Revision Order: Standard
Shaft End: Straight with key and tap
Options: With oil seal and 24VDC holding brake
Control: Standard

Yaskawa SGMGV-20A3E6S image SGMGV-20A3E6S is an
Motors-AC Servo manufactured by Yaskawa
Discovered issues: Bad DE Bearing, Bad Feed Back Connector, Bad ODE Bearing, Bad Condition - Requires Reconditioning
Servomotor Type: SGMGV Sigma V High-torque type
Rated Output: 1.8kW
Power Supply Voltage: 200VAC
Serial Encoder: 20-bit Absolute
Design Revision Order: E
Shaft End: Straight with key and tap
Options: Wtih oil seal
Control: Standard